<template>
  <div class="swiper-container">
    <div class="swiper-wrapper">
      <div class="swiper-slide" v-for="item,index in skuImageList" :key="item.id">
        <img :class="{active:currentIndex === index}" :src="item.imgUrl" @click="changeImg(item.imgUrl,index)" />
      </div>
    </div>
    <div class="swiper-button-next"></div>
    <div class="swiper-button-prev"></div>
  </div>
</template>

<script>
import Swiper from "swiper";
export default {
  name: "ImageList",
  props: ["skuImageList"],
  data(){
    return{
      currentIndex:0
    }
  },
  watch:{
    skuImageList(){
      this.$nextTick(() => {
      new Swiper(".swiper-container", {
        // 设置同时显示的图片数量
        slidesPerView :3,
        // 每一次切换图片的个数
        slidesPerGroup:1,
        // 如果需要前进后退按钮
        navigation: {
          nextEl: ".swiper-button-next",
          prevEl: ".swiper-button-prev",
        },
      });
    });
    }
  },
  methods:{
    changeImg(url,index){
      // 向Zoom组件传递数据
      this.$bus.$emit('changeImg',url)
      // 修改图片的高亮
      this.currentIndex = index
    }
  }
};
</script>

<style lang="less" scoped>
.swiper-container {
  height: 56px;
  width: 412px;
  box-sizing: border-box;
  padding: 0 12px;

  .swiper-slide {
    width: 56px;
    height: 56px;

    img {
      width: 100%;
      height: 100%;
      border: 1px solid #ccc;
      padding: 2px;
      width: 50px;
      height: 50px;
      display: block;

      &.active {
        border: 2px solid #f60;
        padding: 1px;
      }
    }
  }

  .swiper-button-next {
    left: auto;
    right: 0;
  }

  .swiper-button-prev {
    left: 0;
    right: auto;
  }

  .swiper-button-next,
  .swiper-button-prev {
    box-sizing: border-box;
    width: 12px;
    height: 56px;
    background: rgb(235, 235, 235);
    border: 1px solid rgb(204, 204, 204);
    top: 0;
    margin-top: 0;
    &::after {
      font-size: 12px;
    }
  }
}
</style>